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ROOM TEMPERATURE SENSOR (for Rear): Inspection

  1. INSPECT REAR ROOM TEMPERATURE SENSOR 
    1. Remove the rear room temperature sensor (see ROOM TEMPERATURE SENSOR (FOR REAR) ).
    2. Disconnect the connector from the rear room temperature sensor.
    3. Measure the resistance of the sensor.

      Standard resistance 

      STANDARD RESISTANCE CHART

      Tester Connection Condition Specified Condition
      N13-1 (+) - N13-2 (-) 10°C (50°F) 3.00 to 3.73 kΩ
      N13-1 (+) - N13-2 (-) 15°C (59°F) 2.45 to 2.88 kΩ
      N13-1 (+) - N13-2 (-) 20°C (68°F) 1.95 to 2.30 kΩ
      N13-1 (+) - N13-2 (-) 25°C (77°F) 1.60 to 1.80 kΩ
      N13-1 (+) - N13-2 (-) 30°C (86°F) 1.28 to 1.47 kΩ
      N13-1 (+) - N13-2 (-) 35°C (95°F) 1.00 to 1.22 kΩ
      N13-1 (+) - N13-2 (-) 40°C (104°F) 0.80 to 1.00 kΩ
      N13-1 (+) - N13-2 (-) 45°C (113°F) 0.65 to 0.85 kΩ
      N13-1 (+) - N13-2 (-) 50°C (122°F) 0.50 to 0.70 kΩ
      N13-1 (+) - N13-2 (-) 55°C (131°F) 0.44 to 0.60 kΩ
      N13-1 (+) - N13-2 (-) 60°C (140°F) 0.36 to 0.50 kΩ
      NOTE:
      • Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.
      • When measuring, the sensor temperature must be the same as the ambient temperature.

      HINT:

      As the temperature increases, the resistance decreases (see the graph).

      If the resistance value is not as specified, replace the sensor.

      Fig 1: Identifying Rear Room Temperature Sensor Connector Terminals And Temperature/Resistance Graph
      G06119392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002